Refactoring button field and its type (2nd try)

content/browser/renderer_host/input/touch_emulator.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/renderer_host/input/touch_emulator.h"
 
 #include "build/build_config.h"
 #include "content/browser/renderer_host/input/motion_event_web.h"
 #include "content/common/input/web_touch_event_traits.h"
 #include "content/grit/content_resources.h"
@@ skipping 122 matching lines @@
       gfx::Point(cursor_image.Width() / 2, cursor_image.Height() / 2);
 
   cursor->InitFromCursorInfo(cursor_info);
   return gfx::ScaleSize(gfx::SizeF(cursor_image.Size()), 1.f / scale);
 }
 
 bool TouchEmulator::HandleMouseEvent(const WebMouseEvent& mouse_event) {
   if (!enabled())
     return false;
 
-  if (mouse_event.button == WebMouseEvent::ButtonRight &&
+  if (mouse_event.button == WebMouseEvent::Button::Right &&
       mouse_event.type == WebInputEvent::MouseDown) {
     client_->ShowContextMenuAtPoint(gfx::Point(mouse_event.x, mouse_event.y));
   }
 
-  if (mouse_event.button != WebMouseEvent::ButtonLeft)
+  if (mouse_event.button != WebMouseEvent::Button::Left)
     return true;
 
   if (mouse_event.type == WebInputEvent::MouseMove) {
     if (last_mouse_event_was_move_ &&
         mouse_event.timeStampSeconds < last_mouse_move_timestamp_ +
             kMouseMoveDropIntervalSeconds)
       return true;
 
     last_mouse_event_was_move_ = true;
     last_mouse_move_timestamp_ = mouse_event.timeStampSeconds;
@@ skipping 293 matching lines @@
   point.tiltX = 0;
   point.tiltY = 0;
   point.pointerType = blink::WebPointerProperties::PointerType::Touch;
 }
 
 bool TouchEmulator::InPinchGestureMode() const {
   return shift_pressed_;
 }
 
 }  // namespace content